body {
    background-color: #f1f2f5;
    padding: 15px;
}

form {
    width: 600px;
    margin: 20px auto;
}

form .layui-form-item {
    margin-top: 50px;

}

form .layui-form-item input {
    border: 1px teal solid;
}

.layui-card-header {
    font-size: 16px;
    font-weight: bold;
}